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Apparatus and method for preparing alcohol from olefin

Inactive Publication Date: 2014-11-27
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a way to make alcohol that reduces the production of unwanted byproducts and effectively removes any that are still present. This results in a better quality alcohol with no high-boiling point components.

Problems solved by technology

When the normal-butyraldehyde containing high-boiling point components is supplied to the hydrogenation reactor and is then subjected to hydrogenation, problems of low product yield and decreased catalyst activity are generated.
However, in spite of the catalysts and vapor- or liquid-phase reaction, undesired side reactions such as esterification, acetalization and esterification are generated during the reactions, thus disadvantageously causing deterioration in reaction selectivity and requiring additional purification of high-boiling point components incorporated in alcohol in the process of separating the produced alcohol.

Method used

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  • Apparatus and method for preparing alcohol from olefin
  • Apparatus and method for preparing alcohol from olefin

Examples

Experimental program
Comparison scheme
Effect test

example 1.1

Production of Catalyst Solution

[0082]3.2 kg of triphenyl phosphine (TPP) was completely dissolved in 28.7 kg of normal-butyraldehyde having a purity of 99%. 45.9 g of an acetylacetonatodicarbonyl triphenylphosphine rhodium (ROPAC)) catalyst which had been previously weighted was further added to the solution to prepare 32 kg of a catalyst solution.

example 1.2

Preparation of Aldehyde and Gas-Liquid Separation

[0083]Referring to FIG. 1, two 30 L loop reactors 100 were produced and a venturi diffusion tube having a nozzle diameter of 5 mm, a diffusion tube inlet diameter of 10 mm, a diffusion tube outlet diameter of 20 mm and a diffusion tube length of 30 mm was mounted on a head of each reactor. In addition, a flat diffusion plate having a diameter of 70 mm was fixed at a position of 200 mm from the lower outlet in the reactor. A circulation pump was mounted in the reactor such that a reaction solution could be recirculated at a flow rate of 20 L / min to a spray nozzle of each reactor head and a heat exchanger 110 was mounted on an external circulation line of both reactors so that reaction heat generated during reaction could be removed.

[0084]The two reactors were connected in series and, for a first reactor, which was a first reactor of the two reactors connected in series, a portion of a circulation line was connected to an upper part of ...

example 1.3

Hydrogenation of Aldehyde Using Fixed Bed Catalyst Reactor

[0090]An alumina ball was charged to a position of 57 cm from an upper part of a column-shaped reactor having a diameter of 8 cm and a length of 330 cm, as a hydrogenation reactor 300, a nickel catalyst supported on gamma-alumina was charged to a length of 315 cm therefrom, and the alumina ball was charged to the remaining lower part thereof. The temperature of the reactor outlet was maintained at a level not higher than 110° C. using an additional circulation pump and an external heat exchanger and an inner pressure of the reactor was maintained at 25 barg.

[0091]Normal-butylalcohol was used as a solvent medium for reaction and heat exchange and a circulation flow was maintained at 38 kg / hr. Upon reaching a normal state, operation was performed for 90 hours and a total weight of a hydrogenation product containing butyl alcohol as a major component was 581 kg and the hydrogenation product was obtained in an amount of 6.45 kg p...

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Abstract

Disclosed are an apparatus and method for preparing alcohol from olefin. A reactor for hydroformylating olefin comprises a loop reactor for reducing high-boiling point components, a post-treatment device for separating aldehyde comprises a catalyst / aldehyde separator and a divided wall column (DWC) for removing remaining high-boiling point components, and a post-treatment device for separating alcohol comprises a divided wall column (DWC) for removing remaining high-boiling point components. The apparatus and method for preparing alcohol reduce production of high-boiling point components in the preparation of alcohols and efficiently remove remaining high-boiling point components, thus obtaining alcohol containing no high-boiling point components.

Description

TECHNICAL FIELD[0001]The present invention relates to an apparatus and method for preparing alcohol from olefin. More specifically, the present invention relates to an apparatus and method for preparing alcohol which reduce production of high-boiling point components in the preparation of alcohols and efficiently remove remaining high-boiling point components to obtain alcohol containing no high-boiling point component.BACKGROUND ART[0002]Hydroformylation well-known as an “oxo reaction” is a process of producing linear (normal) and branched (iso) aldehydes having one more carbon than olefins by reacting various olefins with synthetic gas (CO / H2) in the presence of a metallic catalyst and a ligand.[0003]Aldehydes synthesized by the oxo reaction are converted into aldehyde derivatives, i.e., acids and alcohols, via oxidation or reduction. Furthermore, aldehydes may be converted into acids and alcohols containing a long alkyl group via aldol condensation or the like and then oxidation ...

Claims

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Application Information

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IPC IPC(8): C07C29/132B01J19/24
CPCB01J19/2455C07C29/132C07C29/141C07C29/80C07C45/50C07C47/02C07C47/04C07C47/06C07C47/21C07C47/22C07C47/238C07C47/54C07C31/12C07C31/125B01D3/141C07C29/175C07C45/74C07C45/82B01D3/002B01D15/08C07C29/76C07C31/24
Inventor EOM, SUNG SHIKKO, DONG HYUNKIM, DAE CHUL
Owner LG CHEM LTD
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